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The data produced by the future space-based millihertz gravitational-wave detector LISA will require nontrivial pre-processing, which might affect the science results. It is crucial to demonstrate the feasibility of such processing…

Instrumentation and Methods for Astrophysics · Physics 2023-05-22 Jean-Baptiste Bayle , Olaf Hartwig , Marc Lilley , Aurélien Hees , Christian Chapman-Bird , Graham Woan , Peter Wolf

The Gaia space mission is crafting revolutionary astrometric, photometric and spectroscopic catalogues that will allow us to map our Galaxy, but only if we know the completeness of this Gaia-verse of catalogues: what stars does it contain…

Instrumentation and Methods for Astrophysics · Physics 2020-07-29 Douglas Boubert , Andrew Everall , Berry Holl

Stellar spectroscopic classification has been successfully automated by a number of groups. Automated classification and parameterization work best when applied to a homogeneous data set, and thus these techniques primarily have been…

Astrophysics · Physics 2007-05-23 Ted von Hippel , Carlos Allende Prieto , Chris Sneden

The Gaia-ESO Survey was designed to target all major Galactic components (i.e., bulge, thin and thick discs, halo and clusters), with the goal of constraining the chemical and dynamical evolution of the Milky Way. This paper presents the…

The bandwith, sensitivity and sheer survey speed of the SKA offers unique potential for deep spectroscopic surveys of the Milky Way. Within the frequency bands available to the SKA lie many transitions that trace the ionised, radical and…

We present SkyCURTAINs, a data driven and model agnostic method to search for stellar streams in the Milky Way galaxy using data from the Gaia telescope. SkyCURTAINs is a weakly supervised machine learning algorithm that builds a background…

Astrophysics of Galaxies · Physics 2024-05-22 Debajyoti Sengupta , Stephen Mulligan , David Shih , John Andrew Raine , Tobias Golling

Convection plays an essential role in the emerging intensity for many stars that will be observed by Gaia. Convective-related surface structures affect the shape, shift, and asymmetry of absorption lines, the phocentric and photometric…

Solar and Stellar Astrophysics · Physics 2011-12-13 A. Chiavassa , L. Bigot , F. Thevenin , R. Collet , G. Jasniewicz , Z. Magic , M. Asplund

Machine learning can play a powerful role in inferring missing line-of-sight velocities from astrometry in surveys such as Gaia. In this paper, we apply a neural network to Gaia Early Data Release 3 (EDR3) and obtain line-of-sight…

Astrophysics of Galaxies · Physics 2023-02-01 Adriana Dropulic , Hongwan Liu , Bryan Ostdiek , Mariangela Lisanti

Systematic reviews, which entail the extraction of data from large numbers of scientific documents, are an ideal avenue for the application of machine learning. They are vital to many fields of science and philanthropy, but are very…

Computation and Language · Computer Science 2020-10-12 Seraphina Goldfarb-Tarrant , Alexander Robertson , Jasmina Lazic , Theodora Tsouloufi , Louise Donnison , Karen Smyth

A tool for representation of the one-dimensional astrometric signal of Gaia is described and investigated in terms of fit discrepancy and astrometric performance with respect to number of parameters required. The proposed basis function is…

Instrumentation and Methods for Astrophysics · Physics 2010-10-12 Dr Mario Gai , Rossella Cancelliere , Deborah Busonero

The search for extrasolar planets has developed rapidly and, today, more than 1700 planets have been found orbiting stars. Thanks to Gaia, we will collect high-accuracy astrometric orbits of thousands of new low-mass celestial objects, such…

Earth and Planetary Astrophysics · Physics 2015-02-04 L. Benamati , V. Zh. Adibekyan , N. C. Santos , A. Sozzetti

In the era of large spectroscopic surveys, a vast amount of spectra of massive stars will be gathered and supplemented by the wealth of astrometric and photometric data provided by the Gaia satellite. Released data will mean a major step…

Solar and Stellar Astrophysics · Physics 2025-11-06 S. R. Berlanas

Optimal estimation of signal amplitude, background level, and photocentre location is crucial to the combined extraction of astrometric and photometric information from focal plane images, and in particular from the one-dimensional…

Instrumentation and Methods for Astrophysics · Physics 2017-04-05 Mario Gai , Deborah Busonero , Rossella Cancelliere

Today's AI deployments often require significant human involvement and skill in the operational stages of the model lifecycle, including pre-release testing, monitoring, problem diagnosis and model improvements. We present a set of enabling…

Automatic scheduling techniques are becoming a crucial tool for the efficient planning of large astronomical surveys. A specific scheduling method is being designed and developed for the Atmospheric Remote-sensing Infrared Exoplanet…

Instrumentation and Methods for Astrophysics · Physics 2022-01-20 J. C. Morales , N. Nakhjiri , J. Colomé , I. Ribas , E. García , D. Moreno , F. Vilardell

The measurement of the positions, distances, motions and luminosities of stars represents the foundations of modern astronomical knowledge. Launched at the end of the eighties, the ESA Hipparcos satellite was the first space mission…

Instrumentation and Methods for Astrophysics · Physics 2015-06-04 L. Eyer , P. Dubath , S. Saesen , D. W. Evans , L. Wyrzykowski , S. Hodgkin , N. Mowlavi

While Gaia has observed the phase space coordinates of over a billion stars in the Galaxy, in the overwhelming majority of cases it has only obtained five of the six coordinates, the missing dimension being the radial (line-of-sight)…

Astrophysics of Galaxies · Physics 2022-09-29 Aneesh Naik , Axel Widmark

The GAIA mission will produce an extraordinary database from which we should be able to deduce not only the Galaxy's current structure, but also much of its history, and thus cast a powerful light on the way in which galaxies in general are…

Astrophysics · Physics 2015-06-24 James Binney

Context. We report the exploitation of a sample of epoch astrometry for 157 000 asteroids, the same object in the Gaia Data Release 3, extended over the time coverage planned for the Gaia DR4, which is not expected before the end of 2025.…

Earth and Planetary Astrophysics · Physics 2023-12-13 Gaia Collaboration , P. David , F. Mignard , D. Hestroffer , P. Tanga

We present an update to Via Machinae, an automated stellar stream-finding algorithm based on the deep learning anomaly detector ANODE. Via Machinae identifies stellar streams within Gaia, using only angular positions, proper motions, and…

Astrophysics of Galaxies · Physics 2023-03-06 David Shih , Matthew R. Buckley , Lina Necib